These KBs provide you with various methods to reset your BB ID password:
KB28685 How to reset the BlackBerry ID password using the password recovery question
KB26361 How to change or reset a BlackBerry ID password
Good luck and let us know!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.